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(parent: 15ade5d) | patch
iommu/amd: Set exclusion range correctly
authorJoerg Roedel <jroedel@suse.de>
Fri, 12 Apr 2019 10:50:31 +0000 (12:50 +0200)
committerJoerg Roedel <jroedel@suse.de>
Fri, 12 Apr 2019 10:59:45 +0000 (12:59 +0200)
commit3c677d206210f53a4be972211066c0f1cd47fe12
tree0784753e89b9847d082df06b83e6a915b0644d5dtree | snapshot
parent15ade5d2e7775667cf191cf2f94327a4889f8b9dcommit | diff
iommu/amd: Set exclusion range correctly

The exlcusion range limit register needs to contain the
base-address of the last page that is part of the range, as
bits 0-11 of this register are treated as 0xfff by the
hardware for comparisons.

So correctly set the exclusion range in the hardware to the
last page which is _in_ the range.

Fixes: b2026aa2dce44 ('x86, AMD IOMMU: add functions for programming IOMMU MMIO space')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
drivers/iommu/amd_iommu_init.c diff | blob | history
Domain: System / Kernel;